A conductor of resistance 20 Ω Ω is cut into n equal parts. All the parts are bundled together in parallel. The equivalent is obtain as 
Ω Ω . The number of parts is -
Text Solution
Verified by ExpertsThe correct answer is:
D
when wire is cut into 'n' parts then resistance of each part becomes r = R/n
When they are connected in parallel R eq = 
R eq = 
= 
; 
= 
; ∴ n 2 = 100 ⇒ n = 10 parts
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